Ключевые слова: alarm, apparatus, arrow, background, bell, colorful, concrete, connection, control, danger, emergency, equipment, extinguisher, faucet, fighting, fire, firefighting, firemetal, flow, gauge, hose, hydrant, industrial, industry, instrument, interior, line, measurement, meter, panel, pattern, pipe, pipeline, protection, red, row, safety, security, sprinkler, stopcock, supply, system, tap, technology, tube, utility, valve, wall, water, wheel,